Abstract:On the background of reinforcement engineering of the left-bank of Lijiaxia Hydropower Station,two models,one of which is reinforced by prestressed cable and the other is not reinforced,are compared by geomechanical model experiment techniques. The stability and reinforcing effect on wedge-shaped rock with double sliding surfaces in the slope are researched. The method of simulating complex rock slope and prestressed cable are given. Some results,the variety of relative displacement and absolute displacement of the wedge-shaped rock with double sliding surfaces of the two above models,the prestressed force variation rules of cable with time,the axial force variation rules of anchor cable with time,and the deformation and damage characteristics of cable in different areas of slope are presented. Based on the results,the safety factor of two models are calculated and analyzed. The calculated results show that the safety factor of reinforced slope is 1.4 times higher than that of not reinforced one. Finally,the reinforcement effect on the wedge-shaped rock with two sliding surfaces in the slope reinforced by prestressed cable is summarized.